Photovoltaic devices

Abstract

This invention provides a photovoltaic device, comprising: a base; a mounting frame disposed on the base; a fixing frame hinged to the mounting frame; a photovoltaic panel disposed on the fixing frame; a first telescopic structure, a first end of which is hinged to the mounting frame, and a second end of which is hinged to the fixing frame, the first telescopic structure including a fixed main body and a telescopic part; and a flexible dustproof protective sleeve fitted onto the telescopic part, the length of which changes with the length of the telescopic part when the telescopic part extends or retracts. The technical solution of this application effectively solves the problem in related technologies where the telescopic section of an electric actuator is easily contaminated by sand and dust, thus affecting its service life.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic technology, and more specifically, to a photovoltaic device. Background Technology

[0002] An automatic commutation device for photovoltaic (PV) modules is a piece of equipment used in PV power generation systems. Its main function is to automatically adjust the working direction of PV modules to adapt to the movement of the sun, thereby improving the light reception efficiency of the PV modules. It typically uses mechanical structures or electric devices to tilt and rotate the PV modules, ensuring they always maintain the optimal angle with the sunlight, thus maximizing energy output.

[0003] Existing automatic commutation devices for photovoltaic modules use commutation brackets to regulate the rotation of the modules, while the tilt angle is mainly achieved by rotating electric actuators. Photovoltaic power generation equipment installed in Gobi and arid regions is susceptible to wind and sand erosion, and the telescopic parts of the electric actuators are easily contaminated by dust, thus affecting their service life. Summary of the Invention

[0004] The main objective of this invention is to provide a photovoltaic device that solves the problem that the telescopic section of an electric actuator in related technologies is easily contaminated by sand and dust, thus affecting its service life.

[0005] To achieve the above objectives, according to one aspect of the present invention, a photovoltaic device is provided, comprising: a base; a mounting frame disposed on the base; a fixing frame hingedly connected to the mounting frame; a photovoltaic panel disposed on the fixing frame; a first telescopic structure, a first end of the first telescopic structure hingedly connected to the mounting frame, a second end of the first telescopic structure hingedly connected to the fixing frame, the first telescopic structure including a fixed main body and a telescopic part; and a flexible dustproof protective sleeve fitted onto the telescopic part, the length of the flexible dustproof protective sleeve being able to change with the length of the telescopic part when the telescopic part extends or retracts.

[0006] Furthermore, the photovoltaic device also includes a connection structure, which is located at the end of the telescopic part away from the main body. The first end of the flexible dustproof protective sleeve is connected to the main body, and the second end of the flexible dustproof protective sleeve is connected to the connection structure.

[0007] Furthermore, the connecting structure includes a first connecting plate and a locking member. A second connecting plate is provided at the end of the telescopic part away from the main body. The first connecting plate is connected to the second end of the flexible dustproof protective sleeve and avoids the telescopic part. The locking member can lock the second connecting plate and the first connecting plate.

[0008] Furthermore, a limiting hole is provided on the side wall of the second connecting plate, and the locking member can be inserted into the limiting hole.

[0009] Furthermore, the first connecting plate is an annular structure and is sleeved on the outside of the telescopic part. A connecting hole is provided on the side wall of the annular structure. The locking member includes a first protrusion and a second protrusion spaced apart and a connecting block connected between the first protrusion and the second protrusion. The first protrusion and the second protrusion are located on the same side of the connecting block. When the locking member locks the second connecting plate and the first connecting plate, the first protrusion is inserted into the limiting hole and the second protrusion is inserted into the connecting hole.

[0010] Furthermore, the connecting structure also includes an elastic element, which is connected between the bottom wall of the connecting hole and the second protrusion.

[0011] Furthermore, the distance between the end of the first protrusion furthest from the connecting block and the connecting block is a, and the distance between the end of the second protrusion furthest from the connecting block and the connecting block is b, wherein the distances a and b satisfy the condition: 0.3≤a / b≤0.7.

[0012] Furthermore, the locking component also includes an operating block, which is located on the side of the connecting block away from the first protrusion, and the operating block is provided with multiple anti-slip grooves at intervals.

[0013] Furthermore, the photovoltaic panel includes multiple panels, and the photovoltaic device also includes a tension line and a rotating rod. The tension line is looped and connected to multiple panels. The rotating rod is driven by the tension line. When the rotating rod rotates, it can tighten or loosen the tension line. When the tension line is tightened, it can drive the multiple panels to move closer to each other.

[0014] Furthermore, the photovoltaic device also includes a second telescopic structure, which is disposed between the fixed frame and the photovoltaic panel at the middle position.

[0015] Applying the technical solution of this invention, the mounting frame is mounted on the base, the fixing frame is hinged to the mounting frame, the photovoltaic panel is mounted on the fixing frame, the first end of the first telescopic structure is hinged to the mounting frame, and the second end of the first telescopic structure is hinged to the fixing frame. The first telescopic structure includes a main body and a telescopic part. A flexible dustproof protective sleeve is fitted onto the telescopic part. When the telescopic part extends or retracts, the length of the flexible dustproof protective sleeve can change with the length of the telescopic part. Through the above-mentioned arrangement, the flexible dustproof protective sleeve can protect the telescopic part from dust, thereby preventing the telescopic part from being contaminated by sand and dust. Furthermore, because the flexible dustproof protective sleeve can extend and retract, it can deform with the movement of the telescopic part, thus better protecting the telescopic part. Therefore, the technical solution of this application effectively solves the problem in related technologies where the telescopic section of the electric push rod is easily contaminated by sand and dust, thus affecting its service life. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 A three-dimensional structural schematic diagram of an embodiment of a photovoltaic device according to the present invention is shown;

[0018] Figure 2 It shows Figure 1 A magnified view of part A of the photovoltaic device;

[0019] Figure 3 It shows Figure 1 A partial structural diagram of the first connecting plate of a photovoltaic device;

[0020] Figure 4 It shows Figure 1 A three-dimensional structural diagram of the second connecting plate of the photovoltaic device;

[0021] Figure 5 It shows Figure 1 A three-dimensional structural diagram of the locking component of a photovoltaic device;

[0022] Figure 6 It shows Figure 1 A bottom-view diagram of the photovoltaic panels of a photovoltaic device;

[0023] Figure 7 It shows Figure 6 A side view of the photovoltaic panels of a photovoltaic device;

[0024] Figure 8 It shows Figure 6 A schematic diagram of the structure of a photovoltaic device with the photovoltaic panel in one state;

[0025] Figure 9 It shows Figure 6 A schematic diagram of the photovoltaic panel of a photovoltaic device in another state.

[0026] The above figures include the following reference numerals:

[0027] 10. Base; 20. Mounting bracket; 30. Fixing bracket; 40. Photovoltaic panel; 41. Panel body; 50. First telescopic structure; 51. Second connecting plate; 511. Limiting hole; 60. Flexible dustproof protective sleeve; 70. Connecting structure; 71. First connecting plate; 711. Connecting hole; 72. Locking element; 721. First protrusion; 722. Second protrusion; 723. Connecting block; 724. Operating block; 73. Elastic element; 81. Tensioning line; 82. Rotating rod; 83. Second telescopic structure. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0031] like Figure 1 and Figure 2 As shown, in this embodiment, the photovoltaic device includes: a base 10, a mounting frame 20, a fixing frame 30, a photovoltaic panel 40, a first telescopic structure 50, and a flexible dustproof protective sleeve 60. The mounting frame 20 is mounted on the base 10. The fixing frame 30 is hinged to the mounting frame 20. The photovoltaic panel 40 is mounted on the fixing frame 30. The first end of the first telescopic structure 50 is hinged to the mounting frame 20, and the second end of the first telescopic structure 50 is hinged to the fixing frame 30. The first telescopic structure 50 includes a main body and a telescopic part. The flexible dustproof protective sleeve 60 is fitted onto the telescopic part, and when the telescopic part extends or retracts, the length of the flexible dustproof protective sleeve 60 can change with the length of the telescopic part.

[0032] In this embodiment, the mounting frame 20 is mounted on the base 10, the fixing frame 30 is hinged to the mounting frame 20, the photovoltaic panel 40 is mounted on the fixing frame 30, the first end of the first telescopic structure 50 is hinged to the mounting frame 20, and the second end of the first telescopic structure 50 is hinged to the fixing frame 30. The first telescopic structure 50 includes a main body and a telescopic part. A flexible dustproof protective sleeve 60 is fitted onto the telescopic part. When the telescopic part extends or retracts, the length of the flexible dustproof protective sleeve 60 can change with the length of the telescopic part. Through the above-mentioned arrangement, the flexible dustproof protective sleeve 60 can protect the telescopic part from dust, thereby preventing the telescopic part from being contaminated by sand and dust. Furthermore, since the flexible dustproof protective sleeve 60 can extend and retract, it can deform with the movement of the telescopic part, thus better protecting the telescopic part. Therefore, the technical solution of this embodiment effectively solves the problem in related technologies where the telescopic section of the electric push rod is easily contaminated by sand and dust, thus affecting its service life.

[0033] This design allows photovoltaic (PV) devices to automatically adjust the angle of their solar panels under varying lighting conditions, improving energy conversion efficiency, and is particularly suitable for regions with significant variations in sunlight angle. This design can significantly improve the energy conversion efficiency of PV devices under different lighting conditions, especially in areas where sunlight angle changes frequently. It can greatly enhance the stability and reliability of solar power generation, reduce dependence on traditional energy sources, and promote the application of sustainable energy.

[0034] like Figures 1 to 5 As shown, in this embodiment, the photovoltaic device further includes a connecting structure 70, which is located at the end of the telescopic section away from the main body. The first end of the flexible dustproof protective sleeve 60 is connected to the main body, and the second end of the flexible dustproof protective sleeve 60 is connected to the connecting structure 70. The addition of the connecting structure 70 allows the flexible dustproof protective sleeve 60 to be more securely fixed to the telescopic section, preventing it from falling off under harsh weather conditions. The connecting structure 70 not only enhances the stability of the flexible dustproof protective sleeve 60 but also improves its protective capability in harsh environments, such as in desert areas with strong winds and sandstorms, effectively blocking sand and dust from eroding the photovoltaic panel 40 and the telescopic structure.

[0035] like Figures 1 to 5As shown, in this embodiment, the connecting structure 70 includes a first connecting plate 71 and a locking member 72. A second connecting plate 51 is provided at the end of the telescopic part away from the main body. The first connecting plate 71 connects to the second end of the flexible dustproof protective sleeve 60 and avoids the telescopic part. The locking member 72 can lock the second connecting plate 51 and the first connecting plate 71. This locking mechanism ensures that the flexible dustproof protective sleeve 60 does not generate unnecessary friction during the telescopic part's extension and retraction, protecting the mechanical structure of the telescopic part. It is suitable for photovoltaic devices that require frequent angle adjustments. The design of the locking member 72 not only reduces friction and protects the mechanical structure of the telescopic part but also enables the photovoltaic device to adjust its angle more precisely, making it suitable for applications with high requirements for angle adjustment.

[0036] like Figures 1 to 5 As shown, in this embodiment, a limiting hole 511 is provided on the side wall of the second connecting plate 51, into which the locking member 72 can be inserted. The design of the limiting hole 511 allows the locking member 72 to be precisely fixed on the second connecting plate 51, enhancing the stability of the photovoltaic device and making it suitable for solar energy research equipment or high-precision solar power stations requiring high-precision positioning. The precise design of the limiting hole 511 ensures that the locking member 72 is accurately positioned when fixed, reducing energy loss caused by inaccurate positioning.

[0037] like Figures 1 to 5 As shown, in this embodiment, the first connecting plate 71 is an annular structure and is sleeved on the outside of the telescopic part. A connecting hole 711 is provided on the side wall of the annular structure. The locking member 72 includes a first protrusion 721 and a second protrusion 722 spaced apart, and a connecting block 723 connecting the first protrusion 721 and the second protrusion 722. The first protrusion 721 and the second protrusion 722 are located on the same side of the connecting block 723. When the locking member 72 locks the second connecting plate 51 and the first connecting plate 71, the first protrusion 721 is inserted into the limiting hole 511, and the second protrusion 722 is inserted into the connecting hole 711. This structural design not only simplifies the installation process of the locking member 72 but also ensures its reliability in various environments, making it suitable for rapidly deployed solar power generation projects. This structural optimization not only simplifies the installation and maintenance process but also improves the environmental adaptability of the locking member 72. The connecting structure 70 also includes an elastic member 73, which is connected between the bottom wall of the connecting hole 711 and the second protrusion 722. The addition of the elastic element 73 enables the locking element 72 to withstand a certain amount of external impact when locked. The addition of the elastic element 73 improves the durability of the locking element 72.

[0038] like Figures 1 to 5As shown, in this embodiment, the distance between the end of the first protrusion 721 furthest from the connecting block 723 and the connecting block 723 is 'a', and the distance between the end of the second protrusion 722 furthest from the connecting block 723 and the connecting block 723 is 'b', wherein the distances a and b satisfy the condition: 0.3 ≤ a / b ≤ 0.7. This size ratio setting ensures the balance and stability of the locking member 72 during operation, preventing skewing during locking or unlocking.

[0039] The above-mentioned size setting makes it easier for the first protrusion 721 to separate from the limiting hole 511. Since the length of the second protrusion 722 is greater than the length of the first protrusion 721, the second protrusion 722 and the connecting hole 711 together achieve the guiding function, thereby making the movement stability of the locking member 72 better.

[0040] Specifically, in this embodiment, a / b = 0.5.

[0041] like Figures 1 to 5 As shown, in this embodiment, the locking member 72 further includes an operating block 724, which is located on the side of the connecting block 723 away from the first protrusion 721. Multiple anti-slip grooves are spaced apart on the operating block 724. The anti-slip design of the operating block 724 makes it more convenient for users to operate the locking member 72, maintaining good grip even in rainy or snowy weather, making it suitable for solar power generation equipment in harsh outdoor environments.

[0042] like Figures 1 to 5 As shown, in this embodiment, a mounting bracket 20 is fixedly connected to the upper end of the base 10. A connecting rod is fixedly connected to the upper end of the vertical part of the mounting bracket 20. A fixing bracket 30 is rotatably connected to the upper end of the connecting rod. A photovoltaic panel 40 is fixedly installed on the outer wall of the fixing bracket 30 away from the connecting rod. A first telescopic structure 50 is rotatably connected to the upper end of the horizontal part of the mounting bracket 20. A second connecting plate 51 is fixedly connected to the upper end of the telescopic part of the first telescopic structure 50. The upper end of the second connecting plate 51 is rotatably connected to the fixing bracket 30. A flexible dustproof protective sleeve 60 is fixedly connected to the outer wall of the first telescopic structure 50. The telescopic part of the first telescopic structure 50 is located inside the flexible dustproof protective sleeve 60. The upper end of the flexible dustproof protective sleeve 60 is fixedly connected to the second connecting plate 51. The second connecting plate 51 is slidably sleeved on the outer wall of the telescopic part of the first telescopic structure 50. The upper end of the second connecting plate 51 is in contact with the lower end of the second connecting plate 51. A locking member 72 is provided between the first connecting plate 71 and the second connecting plate 51.

[0043] It should be noted that mounting bracket 20 is an L-shaped bracket.

[0044] like Figures 1 to 5As shown, in this embodiment, two connecting holes 711 are provided at intervals on the first connecting plate 71. The two connecting holes 711 are symmetrically opened on the outer wall of the first connecting plate 71, and the inner walls of the two connecting holes 711 are fitted with second protrusions 722. Each of the two second protrusions 722 is provided with an elastic element 73 between it and the two connecting holes 711. The upper ends of the vertical portions of the two second protrusions 722 are fixedly connected to first protrusions 721. The two first protrusions 721 are slidably disposed in the inner wall of the second connecting plate 51.

[0045] like Figures 1 to 5 As shown, in this embodiment, the elastic element 73 includes two springs, which are symmetrically fixedly connected between the inner wall of the connecting hole 711 and the end of the second protrusion 722.

[0046] like Figures 1 to 5 As shown, in this embodiment, the outer wall of the second connecting plate 51 is provided with limiting holes 511 corresponding to the two first protrusions 721, and the two limiting holes 511 are slidably engaged with the two first protrusions 721 respectively.

[0047] like Figures 1 to 5 As shown, in this embodiment, each of the two second protrusions 722 is fixedly connected to an operating block 724 at one end that is far apart from each other. The upper and lower ends of the two operating blocks 724 are provided with multiple anti-slip grooves in a linear array from front to back. Specifically, the anti-slip grooves can increase the friction between the finger and the operating block 724, so that the operating block 724 can be kept in a certain fixed state when it is pulled.

[0048] like Figures 1 to 5 As shown, in this embodiment, the second protrusion 722 and the first protrusion 721 are integrally formed; specifically, the second protrusion 722 and the first protrusion 721 have good stability.

[0049] like Figures 6 to 9 As shown, in this embodiment, the photovoltaic panel 40 includes multiple panels 41. The photovoltaic device also includes a tension line 81 and a rotating rod 82. The tension line 81 is ring-shaped and connected to the multiple panels 41. The rotating rod 82 is drivenly connected to the tension line 81. When the rotating rod 82 rotates, it can tighten or loosen the tension line 81. When the tension line 81 is tightened, it can drive the multiple panels 41 to move closer to each other. This design allows the photovoltaic panel to automatically adjust its unfolded or retracted state as needed, improving the efficiency and adaptability of the photovoltaic panel.

[0050] like Figures 6 to 9As shown, in this embodiment, the photovoltaic device further includes a second telescopic structure 83, which is disposed between the plate 41 at the midpoint between the fixing frame 30 and the photovoltaic panel 40. The addition of the second telescopic structure 83 not only further optimizes the angle adjustment of the photovoltaic panel 40, but also provides additional support in the event of strong winds, preventing the photovoltaic panel 40 from being damaged by excessive wind.

[0051] The above design not only improves the energy collection efficiency of the photovoltaic panel 40 under different lighting conditions, but also enhances its stability in windy environments. The optimization of the second telescopic structure 83 can provide additional support under windy conditions, effectively preventing damage to the photovoltaic panel 40, improving the wind resistance of energy facilities and the environmental adaptability of scientific research equipment, and providing strong support for energy applications in harsh environments.

[0052] The photovoltaic device of this application, by providing a flexible dustproof protective sleeve 60 on the telescopic part of the first telescopic structure 50, can effectively prevent dust and impurities from entering the interior of the telescopic part, reducing wear and extending its service life. Simultaneously, the connection structure 70 and locking element 72 allow for convenient adjustment and fixation of the flexible dustproof protective sleeve 60, ensuring smooth length changes during telescopic extension and retraction, thus improving the device's reliability and maintenance convenience. Furthermore, the tension line 81 and rotating rod 82 allow for flexible adjustment of the photovoltaic panel 40's unfolded and retracted state, improving its utilization efficiency and adaptability. The addition of the second telescopic structure 83 further enhances the photovoltaic panel 40's adjustability under different environments and requirements, enabling the photovoltaic device to better adapt to various lighting conditions and improve energy utilization. The overall design not only improves the performance of the photovoltaic device but also enhances its flexibility and durability in practical applications.

[0053] The working principle of the photovoltaic device in this embodiment is as follows: When the position of the sun changes, the base 10 drives the mounting frame 20 to rotate, the mounting frame 20 drives the connecting rod to rotate, the connecting rod drives the fixing frame 30 to rotate, and the fixing frame 30 drives the photovoltaic panel 40 to rotate, thereby realizing the rotation of the photovoltaic panel 40. The rise and fall of the telescopic part of the first telescopic structure 50 on the mounting frame 20 can drive the second connecting plate 51 and the fixing frame 30 on the second connecting plate 51 to change the pitch angle, thereby realizing the change of the angle of the photovoltaic panel 40, so that the photovoltaic panel 40 always maintains the optimal angle with the sunlight, thereby maximizing energy output. The above is the known prior art and will not be described in detail.

[0054] During the rising and falling of the telescopic part of the first telescopic structure 50, the flexible dustproof protective sleeve 60 between the first telescopic structure 50 and the second connecting plate 51 can be stretched and contracted accordingly, without hindering the rising and falling of the telescopic part of the first telescopic structure 50. The flexible dustproof protective sleeve 60 can always protect the telescopic part of the first telescopic structure 50 and prevent the telescopic part of the first telescopic structure 50 from being contaminated by sand and dust.

[0055] When lubrication is needed on the telescopic part of the first telescopic structure 50, the operating blocks 724 can be squeezed tightly with both hands and pulled apart. The two operating blocks 724 will cause their respective second protrusions 722 to move apart. The two second protrusions 722 will slide apart within the limiting holes 511 on their respective second connecting plates 51 (during this process, the two springs between the two second protrusions 722 and their respective connecting holes 711 will be stretched). The two second protrusions 722 will then cause their respective first protrusions 721 to slide apart within the limiting holes 511 on their respective second connecting plates 51. The two first protrusions 721 slide away from each other until they are completely separated from their corresponding limiting holes 511. While pulling the two operating blocks 724 with both hands without letting go, move the two operating blocks 724 downwards. The two operating blocks 724 will then move their respective second protrusions 722 downwards together. The two second protrusions 722 can then move the second connecting plate 51 away from its lower end and continue downwards (the second connecting plate 51 will slide downwards on the outer wall of the telescopic part of the first telescopic structure 50). At this point, the flexible dustproof protective sleeve 60 between the second connecting plate 51 and the first telescopic structure 50 can be compressed and retracted into a retracted state. At this time, the telescopic part of the first telescopic structure 50 can be normally exposed, making it convenient to apply lubricant to the telescopic part of the first telescopic structure 50 for maintenance. Similarly, after maintenance, the flexible dustproof protective sleeve 60 and the second connecting plate 51 can be reset by reversing the operation. The operation is simple.

[0056] It should be noted that this photovoltaic device can prevent the telescopic part of the first telescopic structure 50 from being contaminated by sand and dust, and the flexible dustproof protective sleeve 60 used to protect the telescopic part of the first telescopic structure 50 is easy to store, so it will not hinder the application of lubricating oil to the telescopic part of the first telescopic structure 50 for maintenance, and is flexible in use.

[0057] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0058] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0059] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A photovoltaic device, characterized in that, include: Base (10); Mounting bracket (20) is disposed on the base (10); A fixing frame (30) is hinged to the mounting frame (20); A photovoltaic panel (40) is mounted on the mounting frame (30); The first telescopic structure (50) has a first end that is hinged to the mounting bracket (20) and a second end that is hinged to the fixing bracket (30). The first telescopic structure (50) includes a main body and a telescopic part. A flexible dustproof protective sleeve (60) is fitted onto the telescopic part. When the telescopic part extends or retracts, the length of the flexible dustproof protective sleeve (60) can change with the length of the telescopic part. The photovoltaic device further includes a connection structure (70), which is disposed at the end of the telescopic part away from the main body. The first end of the flexible dustproof protective sleeve (60) is connected to the main body, and the second end of the flexible dustproof protective sleeve (60) is connected to the connection structure (70). The connection structure (70) includes a first connecting plate (71) and a locking member (72). The end of the telescopic part away from the main body is provided with a second connecting plate (51). The first connecting plate (71) is connected to the second end of the flexible dustproof protective sleeve (60) and avoids the telescopic part. The locking member (72) can lock the second connecting plate (51) and the first connecting plate (71). The second connecting plate (51) has a limiting hole (511) on its side wall, and the locking member (72) can be inserted into the limiting hole (511); The first connecting plate (71) is an annular structure and is sleeved on the outside of the telescopic part. A connecting hole (711) is provided on the side wall of the annular structure. The locking member (72) includes a first protrusion (721) and a second protrusion (722) spaced apart, and a connecting block (723) connecting the first protrusion (721) and the second protrusion (722). The first protrusion (721) and the second protrusion (722) are located on the same side of the connecting block (723). When the locking member (72) locks the second connecting plate (51) and the first connecting plate (71), the first protrusion (721) is inserted into the limiting hole (511), and the second protrusion (722) is inserted into the connecting hole (711).

2. The photovoltaic device according to claim 1, characterized in that, The connection structure (70) further includes an elastic element (73) connected between the bottom wall of the connection hole (711) and the second protrusion (722).

3. The photovoltaic device according to claim 1, characterized in that, The distance between the end of the first protrusion (721) away from the connecting block (723) and the connecting block (723) is a, and the distance between the end of the second protrusion (722) away from the connecting block (723) and the connecting block (723) is b, wherein the distances a and b satisfy the condition: 0.3≤a / b≤0.

7.

4. The photovoltaic device according to claim 1, characterized in that, The locking member (72) also includes an operating block (724), which is located on the side of the connecting block (723) away from the first protrusion (721). The operating block (724) is provided with a plurality of anti-slip grooves at intervals.

5. The photovoltaic device according to claim 1, characterized in that, The photovoltaic panel (40) includes multiple panels (41), and the photovoltaic device also includes a tension line (81) and a rotating rod (82). The tension line (81) is ring-shaped and connected to the multiple panels (41). The rotating rod (82) is driven to connect to the tension line (81). When the rotating rod (82) rotates, it can tighten or loosen the tension line (81). When the tension line (81) is tightened, it can drive the multiple panels (41) to move closer to each other.

6. The photovoltaic device according to claim 5, characterized in that, The photovoltaic device also includes a second telescopic structure (83), which is disposed between the plate body (41) at the middle position of the fixed frame (30) and the photovoltaic panel (40).

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